Note 5 - Fair Value Presentation - Valuation Techniques for Assets and Liabilities Measured on Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] $ in Thousands	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Other real estate owned	$ 900	$ 1,697
Property held for sale	2,760	2,728
Assets, fair value	$ 3,672	$ 4,425
Measurement Input, Cost to Sell [Member] \| Valuation, Market Approach [Member] \| Minimum [Member]
Other Real Estate Owned, Measurement Input	0.06	0.06
Property Held-for-Sale, Measurement Input	0.01	0.01
Measurement Input, Cost to Sell [Member] \| Valuation, Market Approach [Member] \| Maximum [Member]
Other Real Estate Owned, Measurement Input	0.10	0.10
Property Held-for-Sale, Measurement Input	0.05	0.05
Secured [Member] \| Consumer Portfolio Segment [Member]
Consumer secured loans	$ 12
Secured [Member] \| Consumer Portfolio Segment [Member] \| Measurement Input, Discount Rate [Member] \| Valuation, Market Approach [Member] \| Minimum [Member]
Consumer secured loans, measurement input	10.00%
Secured [Member] \| Consumer Portfolio Segment [Member] \| Measurement Input, Discount Rate [Member] \| Valuation, Market Approach [Member] \| Maximum [Member]
Consumer secured loans, measurement input	30.00%